Reversing mechanism



Oct: 13, 1942.. D. L. CHANDLER rA| v 2,298L527 REVERSING MECHANISM Y I Original Filed June 22, 1940 3 Sheets-Sheet l Oqt. 13, 1942. D. CHANDLER ETAL' ,2

REVERSVING MEcmmIsM ori in l' Filed Jung, 22, 1940 3 $hets$heet 2 A97: lllllIIIIIHUIU MQ lllllllllllll Ill Oct. 13, 1942.

D. L. CHANDLER ETAL REVERSING MECHANISM Original Filed June 22, 1940 3 sh eets-sh eet 3 I Patented Oct. 13, 1942 REVERSIN G MECHANISM Daniel L. Chandler, Salem, George W. Ewing, Peabody, and Frank H. Walker, Salem, Mass., assig'nors to Aresee Company Inc., Salem, Mass, a corporation of Massachusetts Original application June 22, 1940, Serial No. 341,838. Divided and this application January 2, 1941, Serial No. 372,935

3 Claims.

Our present invention relates to automobile window-sash raising and lowering mechanism being a division of application Ser. No. 341,838, filed June 22, 1940.

Heretofore, it has been the practice, in automobile manufacture, to provide hand-operated mechanical means of a more-or-less automatic type in which the automobile window-sash is raised and lowered by means of a crank, lever, or other hand motivated mechanisms. In all such devices, it is necessary for the operator of the window-sash to perform a continuous sustained movement of the hand, arm, and body, in

order to continue the movement of the windowsash in either direction.

In the engineering field it is well known and recognized that more and more automobile control of an automatic nature is fast superseding hand-operated mechanisms in which the operators hand performs a continuous sustained movement during the operation of the various mechanisms.

In the present-day manufacture of automobiles, this full-automatic development of controlling devices is making itself evident in many improvements which contribute to the ease and comfort of the operator.

Our present invention, as set forth in the appended claims, and to which this present application is specifically dedicated relates to a reversing mechanism in which a unidirectional electrical motor operated from any source, of electrical power operates certain Window-sash raising and lowering mechanism, and for the purpose of utility we are showing and describing the same as applied to automobile doors in combination with certain other mechanisms hereinafter described in connection with our reversing mechanism.

The principal object of our invention is an improved reversing mechanism;

Another object is an improved reversing mechanism which may utilize a continuous unidirectional force and be reversed on the delivery side without stopping the said force, and

Other objects and novel features comprising the construction and operation of the same will be apparent as the description of the same progresses.

In the drawings illustrating our invention:

Fig. 1 is an assembled inside elevation of a window-sash mechanism, as mounted in an automobile door, portions of the door having been broken away and other parts removed to better illustrate the arrangement of parts, and especial- 1y as to show how our reversing mechanism operates with respect to apparatus of this type;

Fig. 2 is a cross-section, parts of which are broken away for the sake of convenience being taken on the line 2-2 of Fig. 1;

Fig. 3 is a cross-section taken on the line 33 of Fig. 2 particularly showing the operation of the operating lever when thrown to the lefthand side position, as indicated in dot-and-dash lines in Fig. 1.

The position shown in this figure illustrates the window-sash moving upwardly and just prior to the time it reaches its uppermost position preceding the reversing or movement of the lever to the right-hand side, or to a neutral position which opens the electrical circuit.

Fig. 4 is a fragmentary cross-section taken on the line 44 of Fig. 2. This View shows the relationship of the reversing or operating lever to certain electrical contact members located adjacent the lowermost end of the said reversing lever;

Fig. 5 is a top plan view of the reversing mechanism as indicated in Fig. 1, portions of which arebroken off for convenience. In this view the reversing mechanism is fully assembled and the various parts are set in a neutral position;

Fig. 6 is a cross-section taken on the line 6-45 of Fig. 5 showing a side elevation of said reversing mechanism with the near side plate removed, the extreme ends being broken off for convenience;

Fig. 7 is a fragmentary side elevation of Fig. 6, the left-hand portion being cut off and the spur 7 gear removed to better show one of the reversing members;

Fig. 8 is another side elevation similar to Fig. 7 but showing the reversing member in a different position from that shown in Fig. 7;

Fig. 9 is another top plan view similar to Fig. 6, the reversing slide having been removed;

Fig. 10 is a cross-section taken on the line Ill-l0 of Fig. 6, the front plate shown in Fig. 5 being included;

Fig. 11 is a cross-section taken on the line ll-I| of Fig. 5', and

Fig. 12 is a partial elevation and cross-section of the reversable drive shaft showing reversing members in place on the shaft portion, as removed from the rest of the apparatus.

Referring more in detail to the drawings illustrating our invention, I 0a indicates the side frames of an automobile door. In conventional automobile door design the inside panel I la is provided with the window-sash Hat and elevating and lowering apparatus. The window-sash I2a and glass I3a is slidably mounted in a door frame, as Ila, so that the glass I30. and the channel member IZa in which the glass is mounted can be moved up or down.

A split window sill I4a is provided between the side frames Illa, and so positioned that the glass I3a can be moved up and down between the sill members to any degree of height desired by the operator.

In Fig. 1 it will be noted that wehave provided a frame member I5a having bolts I6a, the bolts being shown in cross-section and normally adapted to be fastened in the panel Ila which is cut away. Pivoted in the frame member I5a at Hu and Im are lever arms I9a and a. The lower ends of the arms I9a and 20a are provided with rollers which engage in the channel members 2 la and. 22a which are fixed to the bottom face of the glass channel member I2a. On the far side of the frame member I5a and attached to the lever arm ISa is segmental gear member 23a. The lever arm 20a is engaged with the lever arm I9a through gears 24a and 25a. A counter balance spring 26a is fixed to the pivot I6a and anchored at 21a to any convenient portion of the frame I5a.

Assuming that the frame I5a is stationarily mounted to the door panel I Ia, and the gear segment 23a is rotated, it will be apparent that the arms I9a and 20a will swing in opposite directions about the pivots Ho and IBa and raise or lower the member I2a and attached glass I3a.

In conventional design of automobile doors, a shaft is journalled in the frame I5a and is further provided, on the far side, as viewed in Fig. 1 with a pinion which engages with the teeth in the segment gear 32a, so that the operator can operate the window control mechanism from the inside of the vehicle.

In our present invention application we have eliminated certain parts above referred to in conventional design.

At I25 we have indicated in dot-and-dash lines the rotor of a unidirectional motor which is generally indicated at I26. Attached to the motor frame is a reversing mechanism I21. The extension members I23 are provided with bolts I29 which are secured to the panel Ila. The rotor I25 of the motor I26 is directly connected to the shaft I30 which is reversably connected to a shaft I3I to which is solidly attached the pinion 29a which engages with the segment 23a. The reversing mechanism between the shaft I30 and the pinion 29a will be described in detail further along in the specification.

Connecting with the reversing mechanism I21 is an extension lever I32. The reversing end of the lever I32 is attached to a reversing slide I33, better shown in Fig. 5, the left end being pivoted to the operating lever 43a. The operating lever 43a is pivoted at I34 to the panel Ila is the same manner as the operating lever 43a shown in Fig. 3. Also attached to the panel IIa is a switch member I35 upon which are carried electrical switch contacts I36, the member I35 being connected to the contacts I36 and one side of the motor I26. On the lower end of the lever 43a and insulated therefrom is knife switch blade I31 which is electrically connected to said motor I26. The switch comprising the members I35, I36 and I31 is of the single pole double throw type. In

Fig. 1 the operating lever 43a is shown in full lines in its neutral position, the dot-and-dash lines at the top indicates the position of the lever 43a when the window is in motion either up or down. When the lever 43a is pushed to the lefthand side the glass I3a rises and when pushed to the right-hand side the glass I311 moves downwardly. When the lever 43a is released from either the right-hand or the left-hand position the springs I38 which are anchored to the pins I39 in the panel IIa returns the lever 43a to its neutral position. It will be apparent that in either the right or left-hand position, the knife switch member I31 will be engaged with the electrical circuit from the switch member I35 but when in a neutral position the electrical circuit is open.

Attached to the glass channel member I2a is a bracket member I40. On the parallel portions of the bracket I40 are roller members MI and I42. By an inspection of the lower end of the operating lever 43a, as shown in Fig. 2, it will be noted that the lever is offset, the near portion 4317 engaging with th roller I42. At the upper portion of the operating lever 43a is a cam bracket I43.

Assuming that the lever 43a is pushed to the left-hand dot-and-dash position and held there by the operator, the glass channel member I2a will rise until the roll I4I contacts the cam member I43 at which point the lever 43a will be pushed back into neutral position and the electrical circuit opened. Assuming that the glass I3a is up and the lever is pushed to the righthand dot-and-dash position and held there, then when the roll I42 reaches the offset portion 43b, the lever 4311 will be returnedcto neutral position and again the electrical circuit will be opened. The glass I3a may be stopped at any point by simply releasing the lever 43a, the springs I38 returning the lever 43a to its neutral position.

The reversing of the segment 23a is entirely accomplished within the mechanism I21 without even waiting for the motor rotor I25 to actually stop. The operating lever 43a may be pushed from right to left or left to right instantly even though the motor I26 is running continuously, and also the window glass may be stopped instantly even though th motor I26 continues to operate because when the lever 43a is in a neutral position the pinion 29a is de-energized and is free from driving connection with the shaft I30, as will be described further along in the description of the reversing mechanism I21.

The mechanism I21 is composed of two supporting side portions I28 and I50 Ming spaced apart by means of end posts or studs I5I. The drive shaft I30 which is directly connected to the rotor I25 extends through both sides I28 and I50. On the inside faces of the sides I28 and I50, and set screwed to the drive shaft I30, are gears I52 and I53. Freely journalled on the shaft I54 on the side I28 is a reversing pinion gear I55.

Journalled to the sides I28 and I50 is the pinion shaft I3I, the back end of which is fixed to the pinion gear 2911 which is directly engaged with the gear teeth on the segment gear member 23a. At a point in the journal of the side frame I28, the shaft I3I is recessed, as shown in Figs. 6, '7, 8, 10 and 12, the recess being indicated at I56 and continuing all the way along the shaft to the front end. The recess I56 is curved on a radius equal to the radius of the shaft I3I. Operating in the same recess I66 are rocker key members I51 and I58. The central opposed ends I51a. and I58a have diameters equal to the diameter of the shaft I3I. The outer ends of the members I51 and I58 are cut down and curved having radial surfaces I59 and I60 corresponding to the radius of the shaft I3I. In Figs. 7 and 8, We have removed the gear I6I which is normally engaged with the gear I52. It will be noted that the gear I 6| is provided with an offset recess I62, shown in Fig. 6. When the end I60 of the rocker key member I58 is in a neutral position, as shown in Fig. 6, the gear which is driven by the gear I52 is in an idling position and no movement of the shaft will take place as a result of the turning of the gear I6 I, but when the rocker key I58 is swung to the right, as shown in Fig. 8, the shaft I3I becomes locked with the gear I6I because the end I60 of the rocker key member I58 has then been swung into the recess I62.

On the opposite end of the shaft I3I is another gear I63 which is also provided with a recess I64 similar to the recess I62 in the gear I6I. In a similar manner, when the end of the rocker key I51 is in a neutral position the gear I63 idles around the rocker key end and does not drive the shaft I3I. Separating the rocker key members I51 and I50 are collars I65 and I66 both of which have recesses I 66a and I65a and both of which are identical with the recess I62 in gear I 6|. The round ends I51a and I58a are journalled in the respective recesses H351; and I66a of the collars I 65 and I66 on their upper portions and in the shaft recess I 56 on their lower portions. In the outer faces of the col lars I65 and I66 are provided recesses I651) and I661). The recesses are provided with radial side edges. On the upper portion of the rocker key members I51 and I58 are provided levers I 51b and I58b respectively which are located in the said recesses I651) and I662). The slots I 6517 and I66b are wider than the lever members I 51b and I58b so that the levers may be swung to the positions shown in Figs. '7 and 8.

Engaging over the outer peripheries of the collars I 65 and I66 and the hub portions of the gears I6I and I63 is the reversing collar I69. This collar I 69 can he slid endwise and is provided with recesses I10 and "I. The recesses at their innermost points are the same width as the levers I51b and I58b but adjacent their outer portion there are provided cam surfaces I12 and I13. By an inspection of Fig. 9, it will be noted that these recesses are reversed, .the recess cam surface I12 being on the left-hand side and the recess cam surface I13 being on the right-hand side of the collar I69. A spring I14 is anchored to the left-hand side of the collar I69 and the lever I51b. Another spring I15 is anchored to the right-hand side of the collar I69 and the lever I58b. When the reversing collar is slid to the right, as viewed in Fig. 11, the lever, as shown in Fig. 8, is rotated to the position shown in Fig. '7, and the restricted portion of the collar recess I1I holds it in place thereby allowing the gear I6I to idle on the shaft I3I. In this position, of the collar I69, the recess I10 has moved away from the lever I 51b leaving it tipped to the left by means of the spring I14, as shown in Fig. 9. When the lever I51b' is in the position shown in Fig. 9, the end I 59 of the rocker key I51 is turned in the shaft recess I56 up into the recessed portion I64 of the gear I63 thereby causing the gear I 63 to engage the shaft I3I. In a similar manner to that shown in Fig. 8, except that the position of the parts are reversed, as viewed from Fig. 8.

A yoke member I16 is pivoted in the studs I5! to the right of the mechanism I21, the yoke portion having pins I11 adapted to engage in the annular central groove in the reversing collar I69. On the top of the mechanism I21 and slidably engaged in the slots I18 are screws I19 screwed into the studs I5I. The slide I33 is provided with a reversing slot having cam recesses I and I8I connected together by a neutral passage I82. A pin I83 attached to the yoke member I16 engages in this reversing slot.

On the far inner side adjacent the member I28 are the gears I53, I63 and I55. The gear I55 engages both gears I53 and I 63. The gear I53 is fixed to the shaft I30 and moves in one direction only. Gear I55 is a reversing gear between gears I 53 and I63.

Assuming that the shaft I 30 is moving in a clock-wise direction and the rocker key member I 51 is in the position indicated in Fig. 9. In such position the gear I63 is engaged with the shaft I3I and the gear I6I is idling, being in the position shown in Fig. 6 with respect to the rocker key I58. The reversing slide I33 is back to the left with the yoke pin I83 located in the cam portion I8I of the reversing slot. Under such condtions, the pinion 29a also rotates to the right or in a clock-wise direction, similar to shaft I 30.

Assuming that the slide I 33 is slid all of the way to the left and the pin I83 is now in the cam portion I80 of the reversing slot. In such position, the rocker key I56 is now engaged with the gear I6I and the gear I63 and reverse gear I55 are idling. In this position, the gear I52 drives the gear I6I and shaft I3I is a counterclock-wise direction.

Assuming that the slide I33 is slid part-way back in either direction and the pin I 83 is engaged in the neutral position I82 in the reversing slot of the slide. In such position both the levers I51b and I58b of the rocker keys I51 and I58 respectively are entered in the restricted recesses I10 and HI of the reversing collar I69 the result of which is that both ends I59 and I60 of rocker keys I51 and I58 are in their neutral position, corresponding to Fig. 6 with respect to the shaft I3I, therefore both gears I6I and I63 are idling and the shaft I3I does not turn even though the shaft I30 and gears I52 and I52 continue to rotate.

In operation, if it is desired to raise the glass I3a, shown in Fig. 1, and assuming that the shaft I30 rotates in a clock-wise direction, the operating lever 43a, is moved to the right. The slide I33 also moves to the right and the gear I63 engages with the drive shaft I30 thereby causing the segment gear 32a to rotate counter-clockwise. By releasing the operating lever 43a at any point during the travel of the glass I3a, the spring I38 immediately returns the lever to its neutral position opening the electrical circuit to the motor I26 thereby checking the glass movement. When the lever 43a is in a neutral position and the reversing slide I33 is also in a neutral position, and even though the motor I 26 continues to rotate in momentum, the segment gear 23a stops at once. Should the operator wish to instantly raise the glass a small amount, areversal of the lever starts the segment turning in a reverse direction although the motor rotor I25 is continuing to revolve.

As previously described, the lever 43a is returned to neutral position at either extreme movement of the glass I3a, and in so doing, the electrical circuit to the motor I26 is not only cut off but in addition thereto the reversing mechanism slot returns the yoke I 16 freeing both 4- gears [BI and I63 from the shaft |3l which carries the pinion 29a which engages the segment gear 23a.

Having thus described our invention what we claim as new is:

1. In a reversing mechanism having a reversible drive shaft on which are journalled idling gears having radially formed key ways, a clutch assembly comprising in combination, rocker key members having extended lever arms pivoted in recesses located in collars positioned on said shaft, the said rocker key members being rockably journalled on said shaft and engaged with one of said idling gears when rocked to one side from an idling position, a reversing yoke pivoted in said mechanism and engaged with a rotatable reversing collar, a restricted recess located on each end of said collar for the purpose of admitting the said rocker key extended lever arms when said reversing collar is moved longitudinally of the major axis of said drive shaft, one of the exterior corners of said collan recess comprising a cam surface engaged against one side of said rocker key member lever arm, springs anchored to said mechanism and said lever arms for the purpose of maintaining the side of said lever arms against said cam sun-face thereby rocking said key member into engagement with the said radially formed key ways in said idling gears, the said idling gear then being engaged with said drive shaft.

2. In a reversing mechanism having a reversible drive shaft on which are journalled idling gears having radially formed key ways, a clutch assembly comprising in combination, rocker key members having extended lever arms pivoted in radially disposed recesses formed in the sides of collars positioned on said shaft, the said rocker key members having radially curved back portions engaging with radially curved recesses formed in one side of said drive shaft, radially curved portions located on said key members and engaging with radially formed key ways located in said idling gears when said keys are rocked to one side, a reversing yoke pivoted in said mechanism and engaged with a rotatable reversing collar, a restricted recess located on each end of said collar for the purpose of admitting the said rocker key extended lever arms when said reversing collar is moved longitudinally of the major axis of said drive shaft, one of the exterior corners of said collar recess comprising a cam surface engaged against one side of said rocker key member lever arms, springs anchored to said mechanism and said lever arms for the purpose of maintaining the side of said lever arm against said cam surface thereby rocking said key member into engagement with the said radially formed key ways in said idling gears, the said idling gears then being engaged with said drive shaft.

3. In a reversing mechanism having a reversible drive shaft on which are journalled idling gears having radially formed key ways engaging with rocker key members pivoted against radially curved recesses formed on said drive shaft, lever arms attached to said rocker key members, collars located on said shaft having radially disposed recesses within which said lever arms are located, the rocker movement of said arms being limited by said recesses, springs attached to said arms and anchored to said mechanism for the purpose of maintaining said arms to one side of said collar recesses, a sliding reversing collar slidably engaged over said first collar, said reversing collar having cam recesses on opposite ends, the said cam surfaces engaging with said key lever arms for the purpose of engaging said idling gears with said shaft when said key arms are moved to one side of the recesses in said first collars.

DANIEL L. CHANDLER. GEORGE W. EWING. FRANK H. WALKER. 

